A method, novel to our knowledge, for effective mirror image suppression in Fourier-domain optical coherence tomography based on a phase shift between neighboring A-mode scans is demonstrated. By realizing that the phase shifts of the real and mirror images are mutually reversed and assuming that the real image intensities of the two successive A-mode scans are the same, we can solve a set of two coupled equations to obtain the real image signals. The images based on the scanning of a high-resolution spectral-domain optical coherence tomography system are processed to show effective mirror image suppression results. Compared with a similar method of broad application, our approach has the advantages of shorter process time and higher flexibility in selecting the concerned image portions for processing.
© 2011 Optical Society of America
Medical Optics and Biotechnology
Original Manuscript: June 9, 2011
Manuscript Accepted: June 27, 2011
Published: July 26, 2011
Vol. 6, Iss. 9 Virtual Journal for Biomedical Optics
Chiung-Ting Wu, Ting-Ta Chi, Cheng-Kuang Lee, Yean-Woei Kiang, Chih-Chung Yang, and Chun-Pin Chiang, "Method for suppressing the mirror image in Fourier-domain optical coherence tomography," Opt. Lett. 36, 2889-2891 (2011)